how much did you weigh when you got pregnant ? and how much did you gain ?!?

The reason I ask this personal question is I am a mom of 2 a 7 1/2 year old and a 4 year old . I was 18 with my first and i was 140 when I got prego with him and got up to 175 , lost it and then I was 135 with my secon son and I gained 45 with him and then gained 40 after :/ I was weighing in at 220 and have recently lost 70 pounds . I am at 150pounds right now and really want another baby I have been holding off cause I want to get down to 130 before we start trying ... I am so conflicted . I over ate like crazy with my second pregnancy and I don't want to do that again . So how much did you gain with your baby's ?!? And what do you think I should do should I weight till I get to my goal weight or try now ?! I am 5"7 150 pounds